OAR 690-020-0047: Design Requirements for New Dams or to Increase Dam Height: Geosynthetics

Edition: Current OARD snapshotEffective: 2020-07-01Last verified: 2026-09-07

Geosynthetics shall not be used as the sole element employed to perform a Dam safety function. Redundant design features are required whenever geosynthetics are used for Dam safety functions.

Official history and status

Statutory/Other Authority: ORS 536.027, 540.488

Statutes/Other Implemented: ORS 540.449, 540.488

History: WRD 3-2020, amend filed 06/29/2020, effective 07/01/2020 WRD 2-2015, f. & cert. ef. 3-17-15

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Official source: https://secure.sos.state.or.us/oard/